What is meant by "resection" in surveying terms?

Study for the GERTC PSAD Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Resection in surveying refers to the method of determining a surveyor's position by observing angles to known points or landmarks. This technique is particularly useful when the surveyor is situated at an unknown location and needs to establish their coordinates. By measuring the angles to at least two or three known reference points—whose positions are already established—the surveyor can utilize geometric principles, specifically triangulation, to calculate their exact location. This method is essential because it allows the surveyor to navigate and relate their position to a larger coordinate system without first having a known base point.

The other options, such as measuring distances to a grid or calculating the area of an irregular shape, do not capture the essence of resection, as they pertain to different surveying techniques. Similarly, creating a survey map from scratch involves compilation and presentation of data rather than determining the position based on angular measurements, which is the focal point of resection.

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